How to get average of column values in laravel

Question

Lets say I have this column

star
----
1    
3    
3    
1    
2    
5    
3

It has seven rows and there are integer values! I want to have

Answer 1

If you want to do it with the query builder you can use aggregate methods like avg:

$avg_stars = DB::table('your_table')
                ->avg('star');

Laravel 5 docs about aggregates.